ICD-10-PCS Billable Code

0YB10ZZ

Excision Buttock, Left to No Qualifier with No Device, Open Approach

Procedural Specifications

Clinical Axis Detail Definition
Section0 Medical and Surgical
Body SystemY Anatomical Regions, Lower Extremities
OperationB Excision
Body Part1 Buttock, Left
Approach0 Open
DeviceZ No Device
QualifierZ No Qualifier

Operation Definition

Cutting out or off, without replacement, a portion of a body part

Procedure Overview

Excision procedures in this family remove a portion of tissue from the lower extremity region - the buttock, hip, thigh, knee, lower leg, ankle, or foot - without replacing what is taken out. Surgeons use this to obtain a biopsy sample for diagnosis, remove a soft tissue mass or lipoma, debride dead or infected tissue from a wound, or excise a small area of diseased skin and subcutaneous tissue that doesn't require a full amputation.

Because the anatomical regions body system is used when the tissue being removed doesn't clearly belong to a named muscle, tendon, bone, or vessel, these procedures often involve broader soft-tissue masses that cross multiple layers, such as a tumor sitting between muscle groups. The goal is always to take out only the affected tissue while preserving the limb's structure and function.

Anatomy & Axis Detail

Buttock, Left

The left buttock is excised to remove abnormal or damaged tissue such as a benign soft tissue mass, an area of chronic pilonidal disease, or necrotic tissue from a pressure ulcer near the ischial tuberosity or sacral region. Given the gluteal region's thick subcutaneous fat layer and its role in weight-bearing during sitting, excisions here often require attention to achieving a closure that will withstand ongoing pressure, particularly in patients with reduced mobility or spinal cord injury. The procedure may involve skin and subcutaneous tissue alone or extend into gluteal muscle depending on the lesion's depth. Operative documentation should clarify the tissue planes removed to distinguish this from a more extensive debridement or muscle-specific procedure.

Approach: Open

Open approach means the surgeon cuts through skin, mucous membrane, or other tissue layers to physically expose the target site to view before performing the procedure. It gives direct visualization and hands-on access, distinguishing it from Percutaneous approaches where instruments pass through a small puncture without exposing the site. Open is typical for procedures needing wide access, such as most laparotomies.

Coding & Documentation

Coders need the operative note to specify that the excised tissue was generalized to the region rather than confined to a single named structure like a specific muscle or the femur, since more specific body systems take precedence when documentation supports them. The approach - open, percutaneous, or percutaneous endoscopic - and whether the procedure was diagnostic (a biopsy) both affect qualifier selection. A recurring mistake is coding a deep debridement that actually reached bone or muscle as an anatomical regions Excision instead of routing it to the musculoskeletal body system where it belongs.

Commonly Confused With

DetachmentThis is easily confused with Detachment, which severs a limb at a joint or shaft rather than removing a discrete piece of tissue - Excision leaves the limb intact.
ExtractionIt also overlaps conceptually with Extraction, which pulls out material like a foreign body by force rather than cutting it out, and with Resection, which is not used in this anatomical regions body system since Resection implies removal of an entire named body part rather than a region-based excision.